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package com.sun.corba.se.impl.naming.cosnaming;

// Imports for Logging
import java.util.logging.Logger;
import java.util.logging.Level;
import com.sun.corba.se.impl.orbutil.LogKeywords;

// Import general CORBA classes
import org.omg.CORBA.Object;
import org.omg.CORBA.BAD_PARAM;
import org.omg.CORBA.INTERNAL;
import org.omg.CORBA.CompletionStatus;
import org.omg.PortableServer.POA;
import org.omg.PortableServer.Servant;

// Import org.omg.CosNaming classes
import org.omg.CosNaming.BindingType;
import org.omg.CosNaming.BindingTypeHolder;
import org.omg.CosNaming.BindingListHolder;
import org.omg.CosNaming.BindingIteratorHolder;
import org.omg.CosNaming.NameComponent;
import org.omg.CosNaming.NamingContextHelper;
import org.omg.CosNaming.NamingContext;
import org.omg.CosNaming.NamingContextPackage.*;
import org.omg.CosNaming._NamingContextImplBase;
import org.omg.CosNaming.NamingContextExtHelper;
import org.omg.CosNaming.NamingContextExt;
import org.omg.CosNaming.NamingContextExtPOA;
import org.omg.CosNaming.NamingContextExtPackage.*;
import org.omg.CosNaming.NamingContextPackage.NotFound;

import com.sun.corba.se.impl.naming.cosnaming.NamingContextDataStore;

import com.sun.corba.se.impl.naming.namingutil.INSURLHandler;
import com.sun.corba.se.spi.logging.CORBALogDomains;
import com.sun.corba.se.impl.logging.NamingSystemException;

import com.sun.corba.se.spi.orb.ORB;

/**
 * Class NamingContextImpl implements the org.omg.CosNaming::NamingContext
 * interface, but does not implement the methods associated with
 * maintaining the "table" of current bindings in a NamingContext.
 * Instead, this implementation assumes that the derived implementation
 * implements the NamingContextDataStore interface, which has the necessary
 * methods. This allows multiple
 * NamingContext implementations that differ in storage of the bindings,
 * as well as implementations of interfaces derived from
 * CosNaming::NamingContext that still reuses the implementation.
 * <p>
 * The operations bind(), rebind(), bind_context() and rebind_context()
 * are all really implemented by doBind(). resolve() is really implemented
 * by doResolve(), unbind() by doUnbind(). list(), new_context() and
 * destroy() uses the NamingContextDataStore interface directly. All the
 * doX() methods are public static.
 * They synchronize on the NamingContextDataStore object.
 * <p>
 * An implementation a NamingContext must extend this class and implement
 * the NamingContextDataStore interface with the operations:
 * Bind(), Resolve(),
 * Unbind(), List(), NewContext() and Destroy(). Calls
 * to these methods are synchronized; these methods should
 * therefore not be synchronized.
 */
public abstract class NamingContextImpl extends NamingContextExtPOA implements NamingContextDataStore {

    protected POA nsPOA;
    private Logger readLogger, updateLogger, lifecycleLogger;
    private NamingSystemException wrapper;
    private static NamingSystemException staticWrapper = NamingSystemException.get(CORBALogDomains.NAMING_UPDATE);

    // The grammer for Parsing and Building Interoperable Stringified Names
    // are implemented in this class
    private InterOperableNamingImpl insImpl;

    /**
     * Create a naming context servant.
     * Runs the super constructor.
     * @param orb an ORB object.
     * @exception java.lang.Exception a Java exception.
     */
    public NamingContextImpl(ORB orb, POA poa) throws java.lang.Exception {
        super();
        this.orb = orb;
        wrapper = NamingSystemException.get(orb, CORBALogDomains.NAMING_UPDATE);

        insImpl = new InterOperableNamingImpl();
        this.nsPOA = poa;
        readLogger = orb.getLogger(CORBALogDomains.NAMING_READ);
        updateLogger = orb.getLogger(CORBALogDomains.NAMING_UPDATE);
        lifecycleLogger = orb.getLogger(CORBALogDomains.NAMING_LIFECYCLE);
    }

    public POA getNSPOA() {
        return nsPOA;
    }

    /**
     * Bind an object under a name in this NamingContext. If the name
     * contains multiple (n) components, n-1 will be resolved in this
     * NamingContext and the object bound in resulting NamingContext.
     * An exception is thrown if a binding with the supplied name already
     * exists. If the
     * object to be bound is a NamingContext it will not participate in
     * a recursive resolve.
     * @param n a sequence of NameComponents which is the name under which
     * the object will be bound.
     * @param obj the object reference to be bound.
     * @exception org.omg.CosNaming.NamingContextPackage.NotFound A name with
     * multiple components was supplied, but the first component could not be
     * resolved.
     * @exception org.omg.CosNaming.NamingContextPackage.CannotProceed Could
     * not proceed in resolving the n-1 components of the supplied name.
     * @exception org.omg.CosNaming.NamingContextPackage.InvalidName The
     * supplied name is invalid (i.e., has length less than 1).
     * @exception org.omg.CosNaming.NamingContextPackage.AlreadyBound An object
     * is already bound under the supplied name.
     * @exception org.omg.CORBA.SystemException One of a fixed set of CORBA
     * system exceptions.
     * @see doBind
     */
    public void bind(NameComponent[] n, org.omg.CORBA.Object obj) throws org.omg.CosNaming.NamingContextPackage.NotFound, org.omg.CosNaming.NamingContextPackage.CannotProceed, org.omg.CosNaming.NamingContextPackage.InvalidName, org.omg.CosNaming.NamingContextPackage.AlreadyBound {
        if (obj == null) {
            updateLogger.warning(LogKeywords.NAMING_BIND + " unsuccessful because NULL Object cannot be Bound ");
            throw wrapper.objectIsNull();
        }
        // doBind implements all four flavors of binding
        NamingContextDataStore impl = (NamingContextDataStore) this;
        doBind(impl, n, obj, false, BindingType.nobject);
        if (updateLogger.isLoggable(Level.FINE)) {
            // isLoggable call to make sure that we save some precious
            // processor cycles, if there is no need to log.
            updateLogger.fine(LogKeywords.NAMING_BIND_SUCCESS + " Name = " + NamingUtils.getDirectoryStructuredName(n));
        }
    }

    /**
     * Bind a NamingContext under a name in this NamingContext. If the name
     * contains multiple (n) components, n-1 will be resolved in this
     * NamingContext and the object bound in resulting NamingContext.
     * An exception is thrown if a binding with the supplied name already
     * exists. The NamingContext will participate in recursive resolving.
     * @param n a sequence of NameComponents which is the name under which
     * the object will be bound.
     * @param obj the NamingContect object reference to be bound.
     * @exception org.omg.CosNaming.NamingContextPackage.NotFound A name with
     * multiple components was supplied, but the first component could not be
     * resolved.
     * @exception org.omg.CosNaming.NamingContextPackage.CannotProceed Could
     * not proceed in resolving the n-1 components of the supplied name.
     * @exception org.omg.CosNaming.NamingContextPackage.InvalidName The
     * supplied name is invalid (i.e., has length less than 1).
     * @exception org.omg.CosNaming.NamingContextPackage.AlreadyBound An object
     * is already bound under the supplied name.
     * @exception org.omg.CORBA.SystemException One of a fixed set of CORBA
     * system exceptions.
     * @see doBind
     */
    public void bind_context(NameComponent[] n, NamingContext nc) throws org.omg.CosNaming.NamingContextPackage.NotFound, org.omg.CosNaming.NamingContextPackage.CannotProceed, org.omg.CosNaming.NamingContextPackage.InvalidName, org.omg.CosNaming.NamingContextPackage.AlreadyBound {
        if (nc == null) {
            updateLogger.warning(LogKeywords.NAMING_BIND_FAILURE + " NULL Context cannot be Bound ");
            throw new BAD_PARAM("Naming Context should not be null ");
        }
        // doBind implements all four flavors of binding
        NamingContextDataStore impl = (NamingContextDataStore) this;
        doBind(impl, n, nc, false, BindingType.ncontext);
        if (updateLogger.isLoggable(Level.FINE)) {
            // isLoggable call to make sure that we save some precious
            // processor cycles, if there is no need to log.
            updateLogger.fine(LogKeywords.NAMING_BIND_SUCCESS + " Name = " + NamingUtils.getDirectoryStructuredName(n));
        }
    }

    /**
     * Bind an object under a name in this NamingContext. If the name
     * contains multiple (n) components, n-1 will be resolved in this
     * NamingContext and the object bound in resulting NamingContext.
     * If a binding under the supplied name already exists it will be
     * unbound first. If the
     * object to be bound is a NamingContext it will not participate in
     * a recursive resolve.
     * @param n a sequence of NameComponents which is the name under which
     * the object will be bound.
     * @param obj the object reference to be bound.
     * @exception org.omg.CosNaming.NamingContextPackage.NotFound A name with
     * multiple components was supplied, but the first component could not be
     * resolved.
     * @exception org.omg.CosNaming.NamingContextPackage.CannotProceed Could not
     * proceed in resolving the n-1 components of the supplied name.
     * @exception org.omg.CosNaming.NamingContextPackage.InvalidName The
     * supplied name is invalid (i.e., has length less than 1).
     * @exception org.omg.CORBA.SystemException One of a fixed set of CORBA
     * system exceptions.
     * @see doBind
     */
    public void rebind(NameComponent[] n, org.omg.CORBA.Object obj) throws org.omg.CosNaming.NamingContextPackage.NotFound, org.omg.CosNaming.NamingContextPackage.CannotProceed, org.omg.CosNaming.NamingContextPackage.InvalidName {
        if (obj == null) {
            updateLogger.warning(LogKeywords.NAMING_REBIND_FAILURE + " NULL Object cannot be Bound ");
            throw wrapper.objectIsNull();
        }
        try {
            // doBind implements all four flavors of binding
            NamingContextDataStore impl = (NamingContextDataStore) this;
            doBind(impl, n, obj, true, BindingType.nobject);
        } catch (org.omg.CosNaming.NamingContextPackage.AlreadyBound ex) {
            updateLogger.warning(LogKeywords.NAMING_REBIND_FAILURE + NamingUtils.getDirectoryStructuredName(n) + " is already bound to a Naming Context");
            // This should not happen
            throw wrapper.namingCtxRebindAlreadyBound(ex);
        }
        if (updateLogger.isLoggable(Level.FINE)) {
            // isLoggable call to make sure that we save some precious
            // processor cycles, if there is no need to log.
            updateLogger.fine(LogKeywords.NAMING_REBIND_SUCCESS + " Name = " + NamingUtils.getDirectoryStructuredName(n));
        }
    }

    /**
     * Bind a NamingContext under a name in this NamingContext. If the name
     * contains multiple (n) components, the first n-1 components will be
     * resolved in this NamingContext and the object bound in resulting
     * NamingContext. If a binding under the supplied name already exists it
     * will be unbound first. The NamingContext will participate in recursive
     * resolving.
     * @param n a sequence of NameComponents which is the name under which
     * the object will be bound.
     * @param obj the object reference to be bound.
     * @exception org.omg.CosNaming.NamingContextPackage.NotFound A name with
     * multiple components was supplied, but the first component could not be
     * resolved.
     * @exception org.omg.CosNaming.NamingContextPackage.CannotProceed Could not
     * proceed in resolving the n-1 components of the supplied name.
     * @exception org.omg.CosNaming.NamingContextPackage.InvalidName The
     * supplied name is invalid (i.e., has length less than 1).
     * @exception org.omg.CORBA.SystemException One of a fixed set of CORBA
     * system exceptions.
     * @see doBind
     */
    public void rebind_context(NameComponent[] n, NamingContext nc) throws org.omg.CosNaming.NamingContextPackage.NotFound, org.omg.CosNaming.NamingContextPackage.CannotProceed, org.omg.CosNaming.NamingContextPackage.InvalidName {
        if (nc == null) {
            updateLogger.warning(LogKeywords.NAMING_REBIND_FAILURE + " NULL Context cannot be Bound ");
            throw wrapper.objectIsNull();
        }
        try {
            // doBind implements all four flavors of binding
            NamingContextDataStore impl = (NamingContextDataStore) this;
            doBind(impl, n, nc, true, BindingType.ncontext);
        } catch (org.omg.CosNaming.NamingContextPackage.AlreadyBound ex) {
            // This should not happen
            updateLogger.warning(LogKeywords.NAMING_REBIND_FAILURE + NamingUtils.getDirectoryStructuredName(n) + " is already bound to a CORBA Object");
            throw wrapper.namingCtxRebindctxAlreadyBound(ex);
        }
        if (updateLogger.isLoggable(Level.FINE)) {
            // isLoggable call to make sure that we save some precious
            // processor cycles, if there is no need to log.
            updateLogger.fine(LogKeywords.NAMING_REBIND_SUCCESS + " Name = " + NamingUtils.getDirectoryStructuredName(n));
        }
    }

    /**
     * Resolve a name in this NamingContext and return the object reference
     * bound to the name. If the name contains multiple (n) components,
     * the first component will be resolved in this NamingContext and the
     * remaining components resolved in the resulting NamingContext, provided
     * that the NamingContext bound to the first component of the name was
     * bound with bind_context().
     * @param n a sequence of NameComponents which is the name to be resolved.
     * @return the object reference bound under the supplied name.
     * @exception org.omg.CosNaming.NamingContextPackage.NotFound A name with
     * multiple components was supplied, but the first component could not be
     * resolved.
     * @exception org.omg.CosNaming.NamingContextPackage.CannotProceed Could not
     * proceed in resolving the n-1 components of the supplied name.
     * @exception org.omg.CosNaming.NamingContextPackage.InvalidName The
     * supplied name is invalid (i.e., has length less than 1).
     * @exception org.omg.CORBA.SystemException One of a fixed set of CORBA
     * system exceptions.
     * @see doResolve
     */
    public org.omg.CORBA.Object resolve(NameComponent[] n) throws org.omg.CosNaming.NamingContextPackage.NotFound, org.omg.CosNaming.NamingContextPackage.CannotProceed, org.omg.CosNaming.NamingContextPackage.InvalidName {
        // doResolve actually resolves
        NamingContextDataStore impl = (NamingContextDataStore) this;
        org.omg.CORBA.Object obj = doResolve(impl, n);
        if (obj != null) {
            if (readLogger.isLoggable(Level.FINE)) {
                readLogger.fine(LogKeywords.NAMING_RESOLVE_SUCCESS + " Name: " + NamingUtils.getDirectoryStructuredName(n));
            }
        } else {
            readLogger.warning(LogKeywords.NAMING_RESOLVE_FAILURE + " Name: " + NamingUtils.getDirectoryStructuredName(n));
        }
        return obj;
    }

    /**
     * Remove a binding from this NamingContext. If the name contains
     * multiple (n) components, the first n-1 components will be resolved
     * from this NamingContext and the final component unbound in
     * the resulting NamingContext.
     * @param n a sequence of NameComponents which is the name to be unbound.
     * @exception org.omg.CosNaming.NamingContextPackage.NotFound A name with
     * multiple components was supplied, but the first component could not be
     * resolved.
     * @exception org.omg.CosNaming.NamingContextPackage.CannotProceed Could not
     * proceed in resolving the n-1 components of the supplied name.
     * @exception org.omg.CosNaming.NamingContextPackage.InvalidName The
     * supplied name is invalid (i.e., has length less than 1).
     * @exception org.omg.CORBA.SystemException One of a fixed set of CORBA
     * system exceptions.
     * @see doUnbind
     */
    public void unbind(NameComponent[] n) throws org.omg.CosNaming.NamingContextPackage.NotFound, org.omg.CosNaming.NamingContextPackage.CannotProceed, org.omg.CosNaming.NamingContextPackage.InvalidName {
        // doUnbind actually unbinds
        NamingContextDataStore impl = (NamingContextDataStore) this;
        doUnbind(impl, n);
        if (updateLogger.isLoggable(Level.FINE)) {
            // isLoggable call to make sure that we save some precious
            // processor cycles, if there is no need to log.
            updateLogger.fine(LogKeywords.NAMING_UNBIND_SUCCESS + " Name: " + NamingUtils.getDirectoryStructuredName(n));
        }
    }

    /**
     * List the contents of this NamingContest. A sequence of bindings
     * is returned (a BindingList) containing up to the number of requested
     * bindings, and a BindingIterator object reference is returned for
     * iterating over the remaining bindings.
     * @param how_many The number of requested bindings in the BindingList.
     * @param bl The BindingList as an out parameter.
     * @param bi The BindingIterator as an out parameter.
     * @exception org.omg.CORBA.SystemException One of a fixed set of CORBA
     * system exceptions.
     * @see BindingListHolder
     * @see BindingIteratorImpl
     */
    public void list(int how_many, BindingListHolder bl, BindingIteratorHolder bi) {
        // List actually generates the list
        NamingContextDataStore impl = (NamingContextDataStore) this;
        synchronized (impl) {
            impl.List(how_many, bl, bi);
        }
        if (readLogger.isLoggable(Level.FINE) && (bl.value != null)) {
            // isLoggable call to make sure that we save some precious
            // processor cycles, if there is no need to log.
            readLogger.fine(LogKeywords.NAMING_LIST_SUCCESS + "list(" + how_many + ") -> bindings[" + bl.value.length + "] + iterator: " + bi.value);
        }
    }

    /**
     * Create a NamingContext object and return its object reference.
     * @return an object reference for a new NamingContext object implemented
     * by this Name Server.
     * @exception org.omg.CORBA.SystemException One of a fixed set of CORBA
     * system exceptions.
     */
    public synchronized NamingContext new_context() {
        // Create actually creates a new naming context
        lifecycleLogger.fine("Creating New Naming Context ");
        NamingContextDataStore impl = (NamingContextDataStore) this;
        synchronized (impl) {
            NamingContext nctx = impl.NewContext();
            if (nctx != null) {
                lifecycleLogger.fine(LogKeywords.LIFECYCLE_CREATE_SUCCESS);
            } else {
                // If naming context is null, then that must be a serious
                // error.
                lifecycleLogger.severe(LogKeywords.LIFECYCLE_CREATE_FAILURE);
            }
            return nctx;
        }
    }

    /**
     * Create a new NamingContext, bind it in this Naming Context and return
     * its object reference. This is equivalent to using new_context() followed
     * by bind_context() with the supplied name and the object reference for
     * the newly created NamingContext.
     * @param n a sequence of NameComponents which is the name to be unbound.
     * @return an object reference for a new NamingContext object implemented
     * by this Name Server, bound to the supplied name.
     * @exception org.omg.CosNaming.NamingContextPackage.AlreadyBound An object
     * is already bound under the supplied name.
     * @exception org.omg.CosNaming.NamingContextPackage.NotFound A name with
     * multiple components was supplied, but the first component could not be
     * resolved.
     * @exception org.omg.CosNaming.NamingContextPackage.CannotProceed Could not
     * proceed in resolving the n-1 components of the supplied name.
     * @exception org.omg.CosNaming.NamingContextPackage.InvalidName The
     * supplied name is invalid (i.e., has length less than 1).
     * @exception org.omg.CORBA.SystemException One of a fixed set of CORBA
     * system exceptions.
     * @see new_context
     * @see bind_context
     */
    public NamingContext bind_new_context(NameComponent[] n) throws org.omg.CosNaming.NamingContextPackage.NotFound, org.omg.CosNaming.NamingContextPackage.AlreadyBound, org.omg.CosNaming.NamingContextPackage.CannotProceed, org.omg.CosNaming.NamingContextPackage.InvalidName {
        NamingContext nc = null;
        NamingContext rnc = null;
        try {
            if (debug)
                dprint("bind_new_context " + nameToString(n));
            // The obvious solution:
            nc = this.new_context();
            this.bind_context(n, nc);
            rnc = nc;
            nc = null;
        } finally {
            try {
                if (nc != null)
                    nc.destroy();
            } catch (org.omg.CosNaming.NamingContextPackage.NotEmpty e) {
            }
        }
        if (updateLogger.isLoggable(Level.FINE)) {
            // isLoggable call to make sure that we save some precious
            // processor cycles, if there is no need to log.
            updateLogger.fine(LogKeywords.NAMING_BIND + "New Context Bound To " + NamingUtils.getDirectoryStructuredName(n));
        }
        return rnc;
    }

    /**
     * Destroy this NamingContext object. If this NamingContext contains
     * no bindings, the NamingContext is deleted.
     * @exception org.omg.CosNaming.NamingContextPackage.NotEmpty This
     * NamingContext is not empty (i.e., contains bindings).
     * @exception org.omg.CORBA.SystemException One of a fixed set of CORBA
     * system exceptions.
     */
    public void destroy() throws org.omg.CosNaming.NamingContextPackage.NotEmpty {
        lifecycleLogger.fine("Destroying Naming Context ");
        NamingContextDataStore impl = (NamingContextDataStore) this;
        synchronized (impl) {
            if (impl.IsEmpty() == true) {
                // The context is empty so it can be destroyed
                impl.Destroy();
                lifecycleLogger.fine(LogKeywords.LIFECYCLE_DESTROY_SUCCESS);
            } else {
                // This context is not empty!
                // Not a fatal error, warning should do.
                lifecycleLogger.warning(LogKeywords.LIFECYCLE_DESTROY_FAILURE + " NamingContext children are not destroyed still..");
                throw new NotEmpty();
            }
        }
    }

    /**
     * Implements all four flavors of binding. It uses Resolve() to
     * check if a binding already exists (for bind and bind_context), and
     * unbind() to ensure that a binding does not already exist.
     * If the length of the name is 1, then Bind() is called with
     * the name and the object to bind. Otherwise, the first component
     * of the name is resolved in this NamingContext and the appropriate
     * form of bind passed to the resulting NamingContext.
     * This method is static for maximal reuse - even for extended naming
     * context implementations where the recursive semantics still apply.
     * @param impl an implementation of NamingContextDataStore
     * @param n a sequence of NameComponents which is the name under which
     * the object will be bound.
     * @param obj the object reference to be bound.
     * @param rebind Replace an existing binding or not.
     * @param bt Type of binding (as object or as context).
     * @exception org.omg.CosNaming.NamingContextPackage.NotFound A name with
     * multiple components was supplied, but the first component could not be
     * resolved.
     * @exception org.omg.CosNaming.NamingContextPackage.CannotProceed Could not     * proceed
     * in resolving the first component of the supplied name.
     * @exception org.omg.CosNaming.NamingContextPackage.InvalidName The
     * supplied name is invalid (i.e., has length less than 1).
     * @exception org.omg.CosNaming.NamingContextPackage.AlreadyBound An object
     * is already bound under the supplied name.
     * @exception org.omg.CORBA.SystemException One of a fixed set of CORBA
     * system exceptions.
     * @see resolve
     * @see unbind
     * @see bind
     * @see bind_context
     * @see rebind
     * @see rebind_context
     */
    public static void doBind(NamingContextDataStore impl, NameComponent[] n, org.omg.CORBA.Object obj, boolean rebind, org.omg.CosNaming.BindingType bt) throws org.omg.CosNaming.NamingContextPackage.NotFound, org.omg.CosNaming.NamingContextPackage.CannotProceed, org.omg.CosNaming.NamingContextPackage.InvalidName, org.omg.CosNaming.NamingContextPackage.AlreadyBound {
        // Valid name?
        if (n.length < 1)
            throw new InvalidName();

        // At bottom level?
        if (n.length == 1) {
            // The identifier must be set
            if ((n[0].id.length() == 0) && (n[0].kind.length() == 0)) {
                throw new InvalidName();
            }

            // Ensure synchronization of backend
            synchronized (impl) {
                // Yes: bind object in this context under the name
                BindingTypeHolder bth = new BindingTypeHolder();
                if (rebind) {
                    org.omg.CORBA.Object objRef = impl.Resolve(n[0], bth);
                    if (objRef != null) {
                        // Refer Naming Service Doc:00-11-01 section 2.2.3.4
                        // If there is an object already bound with the name
                        // and the binding type is not ncontext a NotFound
                        // Exception with a reason of not a context has to be
                        // raised.
                        // Fix for bug Id: 4384628
                        if (bth.value.value() == BindingType.nobject.value()) {
                            if (bt.value() == BindingType.ncontext.value()) {
                                throw new NotFound(NotFoundReason.not_context, n);
                            }
                        } else {
                            // Previously a Context was bound and now trying to
                            // bind Object. It is invalid.
                            if (bt.value() == BindingType.nobject.value()) {
                                throw new NotFound(NotFoundReason.not_object, n);
                            }
                        }
                        impl.Unbind(n[0]);
                    }

                } else {
                    if (impl.Resolve(n[0], bth) != null)
                        // "Resistence is futile." [Borg pickup line]
                        throw new AlreadyBound();
                }

                // Now there are no other bindings under this name
                impl.Bind(n[0], obj, bt);
            }
        } else {
            // No: bind in a different context
            NamingContext context = resolveFirstAsContext(impl, n);

            // Compute tail
            NameComponent[] tail = new NameComponent[n.length - 1];
            System.arraycopy(n, 1, tail, 0, n.length - 1);

            // How should we propagate the bind
            switch (bt.value()) {
                case BindingType._nobject: {
                    // Bind as object
                    if (rebind)
                        context.rebind(tail, obj);
                    else
                        context.bind(tail, obj);
                }
                    break;
                case BindingType._ncontext: {
                    // Narrow to a naming context using Java casts. It must
                    // work.
                    NamingContext objContext = (NamingContext) obj;
                    // Bind as context
                    if (rebind)
                        context.rebind_context(tail, objContext);
                    else
                        context.bind_context(tail, objContext);
                }
                    break;
                default:
                    // This should not happen
                    throw staticWrapper.namingCtxBadBindingtype();
            }
        }
    }

    /**
    * Implements resolving names in this NamingContext. The first component
    * of the supplied name is resolved in this NamingContext by calling
    * Resolve(). If there are no more components in the name, the
    * resulting object reference is returned. Otherwise, the resulting object
    * reference must have been bound as a context and be narrowable to
    * a NamingContext. If this is the case, the remaining
    * components of the name is resolved in the resulting NamingContext.
    * This method is static for maximal reuse - even for extended naming
    * context implementations where the recursive semantics still apply.
    * @param impl an implementation of NamingContextDataStore
    * @param n a sequence of NameComponents which is the name to be resolved.
    * @return the object reference bound under the supplied name.
    * @exception org.omg.CosNaming.NamingContextPackage.NotFound A name with
    * multiple components was supplied, but the first component could not be
    * resolved.
    * @exception org.omg.CosNaming.NamingContextPackage.CannotProceed Could not
    * proceed
    * in resolving the first component of the supplied name.
    * @exception org.omg.CosNaming.NamingContextPackage.InvalidName The supplied
    * name is invalid (i.e., has length less than 1).
    * @exception org.omg.CORBA.SystemException One of a fixed set of CORBA system
    * exceptions.
    * @see resolve
    */
    public static org.omg.CORBA.Object doResolve(NamingContextDataStore impl, NameComponent[] n) throws org.omg.CosNaming.NamingContextPackage.NotFound, org.omg.CosNaming.NamingContextPackage.CannotProceed, org.omg.CosNaming.NamingContextPackage.InvalidName {
        org.omg.CORBA.Object obj = null;
        BindingTypeHolder bth = new BindingTypeHolder();

        // Length must be greater than 0
        if (n.length < 1)
            throw new InvalidName();

        // The identifier must be set
        if (n.length == 1) {
            synchronized (impl) {
                // Resolve first level in this context
                obj = impl.Resolve(n[0], bth);
            }
            if (obj == null) {
                // Object was not found
                throw new NotFound(NotFoundReason.missing_node, n);
            }
            return obj;
        } else {
            // n.length > 1
            if ((n[1].id.length() == 0) && (n[1].kind.length() == 0)) {
                throw new InvalidName();
            }

            NamingContext context = resolveFirstAsContext(impl, n);

            // Compute restOfName = name[1..length]
            NameComponent[] tail = new NameComponent[n.length - 1];
            System.arraycopy(n, 1, tail, 0, n.length - 1);

            // Resolve rest of name in context
            try {
                // First try to resolve using the local call, this should work
                // most of the time unless there are federated naming contexts.
                Servant servant = impl.getNSPOA().reference_to_servant(context);
                return doResolve(((NamingContextDataStore) servant), tail);
            } catch (Exception e) {
                return context.resolve(tail);
            }
        }
    }

    /**
    * Implements unbinding bound names in this NamingContext. If the
    * name contains only one component, the name is unbound in this
    * NamingContext using Unbind(). Otherwise, the first component
    * of the name is resolved in this NamingContext and
    * unbind passed to the resulting NamingContext.
    * This method is static for maximal reuse - even for extended naming
    * context implementations where the recursive semantics still apply.
    * @param impl an implementation of NamingContextDataStore
    * @param n a sequence of NameComponents which is the name to be unbound.
    * @exception org.omg.CosNaming.NamingContextPackage.NotFound A name with multiple
    * components was supplied, but the first component could not be
    * resolved.
    * @exception org.omg.CosNaming.NamingContextPackage.CannotProceed Could not proceed
    * in resolving the n-1 components of the supplied name.
    * @exception org.omg.CosNaming.NamingContextPackage.InvalidName The supplied name
    * is invalid (i.e., has length less than 1).
    * @exception org.omg.CORBA.SystemException One of a fixed set of CORBA system exceptions.
    * @see resolve
    */
    public static void doUnbind(NamingContextDataStore impl, NameComponent[] n) throws org.omg.CosNaming.NamingContextPackage.NotFound, org.omg.CosNaming.NamingContextPackage.CannotProceed, org.omg.CosNaming.NamingContextPackage.InvalidName {
        // Name valid?
        if (n.length < 1)
            throw new InvalidName();

        // Unbind here?
        if (n.length == 1) {
            // The identifier must be set
            if ((n[0].id.length() == 0) && (n[0].kind.length() == 0)) {
                throw new InvalidName();
            }

            org.omg.CORBA.Object objRef = null;
            synchronized (impl) {
                // Yes: unbind in this context
                objRef = impl.Unbind(n[0]);
            }

            if (objRef == null)
                // It was not bound
                throw new NotFound(NotFoundReason.missing_node, n);
            // Done
            return;
        } else {
            // No: unbind in a different context

            // Resolve first  - must be resolveable
            NamingContext context = resolveFirstAsContext(impl, n);

            // Compute tail
            NameComponent[] tail = new NameComponent[n.length - 1];
            System.arraycopy(n, 1, tail, 0, n.length - 1);

            // Propagate unbind to this context
            context.unbind(tail);
        }
    }

    /**
    * Implements resolving a NameComponent in this context and
    * narrowing it to CosNaming::NamingContext. It will throw appropriate
    * exceptions if not found or not narrowable.
    * @param impl an implementation of NamingContextDataStore
    * @param n a NameComponents which is the name to be found.
    * @exception org.omg.CosNaming.NamingContextPackage.NotFound The
    * first component could not be resolved.
    * @exception org.omg.CosNaming.NamingContextPackage.CannotProceed Could not proceed
    * in resolving the first component of the supplied name.
    * @exception org.omg.CORBA.SystemException One of a fixed set of CORBA system exceptions.
    * @see resolve
    */
    protected static NamingContext resolveFirstAsContext(NamingContextDataStore impl, NameComponent[] n) throws org.omg.CosNaming.NamingContextPackage.NotFound {
        org.omg.CORBA.Object topRef = null;
        BindingTypeHolder bth = new BindingTypeHolder();
        NamingContext context = null;

        synchronized (impl) {
            // Resolve first  - must be resolveable
            topRef = impl.Resolve(n[0], bth);
            if (topRef == null) {
                // It was not bound
                throw new NotFound(NotFoundReason.missing_node, n);
            }
        }

        // Was it bound as a context?
        if (bth.value != BindingType.ncontext) {
            // It was not a context
            throw new NotFound(NotFoundReason.not_context, n);
        }

        // Narrow to a naming context
        try {
            context = NamingContextHelper.narrow(topRef);
        } catch (org.omg.CORBA.BAD_PARAM ex) {
            // It was not a context
            throw new NotFound(NotFoundReason.not_context, n);
        }

        // Hmm. must be ok
        return context;
    }

    /**
     * This operation creates a stringified name from the array of Name
     * components.
     * @param n Name of the object <p>
     * @exception org.omg.CosNaming.NamingContextExtPackage.InvalidName
     * Indicates the name does not identify a binding.<p>
     *
     */
    public String to_string(org.omg.CosNaming.NameComponent[] n) throws org.omg.CosNaming.NamingContextPackage.InvalidName {
        // Name valid?
        if ((n == null) || (n.length == 0)) {
            throw new InvalidName();
        }
        NamingContextDataStore impl = (NamingContextDataStore) this;

        String theStringifiedName = insImpl.convertToString(n);

        if (theStringifiedName == null) {
            throw new InvalidName();
        }

        return theStringifiedName;
    }

    /**
     * This operation  converts a Stringified Name into an  equivalent array
     * of Name Components.
     * @param sn Stringified Name of the object <p>
     * @exception org.omg.CosNaming.NamingContextExtPackage.InvalidName
     * Indicates the name does not identify a binding.<p>
     *
     */
    public org.omg.CosNaming.NameComponent[] to_name(String sn) throws org.omg.CosNaming.NamingContextPackage.InvalidName {
        // Name valid?
        if ((sn == null) || (sn.length() == 0)) {
            throw new InvalidName();
        }
        NamingContextDataStore impl = (NamingContextDataStore) this;
        org.omg.CosNaming.NameComponent[] theNameComponents = insImpl.convertToNameComponent(sn);
        if ((theNameComponents == null) || (theNameComponents.length == 0)) {
            throw new InvalidName();
        }
        for (int i = 0; i < theNameComponents.length; i++) {
            // If there is a name component whose id and kind null or
            // zero length string, then an invalid name exception needs to be
            // raised.
            if (((theNameComponents[i].id == null) || (theNameComponents[i].id.length() == 0)) && ((theNameComponents[i].kind == null) || (theNameComponents[i].kind.length() == 0))) {
                throw new InvalidName();
            }
        }
        return theNameComponents;
    }

    /**
     * This operation creates a URL based "iiopname://" format name
     * from the Stringified Name of the object.
     * @param addr internet based address of the host machine where
     * Name Service is running <p>
     * @param sn Stringified Name of the object <p>
     * @exception org.omg.CosNaming.NamingContextExtPackage.InvalidName
     * Indicates the name does not identify a binding.<p>
     * @exception org.omg.CosNaming.NamingContextPackage.InvalidAddress
     * Indicates the internet based address of the host machine is
     * incorrect <p>
     *
     */

    public String to_url(String addr, String sn) throws org.omg.CosNaming.NamingContextExtPackage.InvalidAddress, org.omg.CosNaming.NamingContextPackage.InvalidName {
        // Name valid?
        if ((sn == null) || (sn.length() == 0)) {
            throw new InvalidName();
        }
        if (addr == null) {
            throw new org.omg.CosNaming.NamingContextExtPackage.InvalidAddress();
        }
        NamingContextDataStore impl = (NamingContextDataStore) this;
        String urlBasedAddress = null;
        urlBasedAddress = insImpl.createURLBasedAddress(addr, sn);
        // Extra check to see that corba name url created is valid as per
        // INS spec grammer.
        try {
            INSURLHandler.getINSURLHandler().parseURL(urlBasedAddress);
        } catch (BAD_PARAM e) {
            throw new org.omg.CosNaming.NamingContextExtPackage.InvalidAddress();
        }
        return urlBasedAddress;
    }

    /**
     * This operation resolves the Stringified name into the object
     * reference.
     * @param sn Stringified Name of the object <p>
     * @exception org.omg.CosNaming.NamingContextPackage.NotFound
     * Indicates there is no object reference for the given name. <p>
     * @exception org.omg.CosNaming.NamingContextPackage.CannotProceed
     * Indicates that the given compound name is incorrect <p>
     * @exception org.omg.CosNaming.NamingContextExtPackage.InvalidName
     * Indicates the name does not identify a binding.<p>
     * @exception org.omg.CosNaming.NamingContextPackage.AlreadyBound
     * Indicates the name is already bound.<p>
     *
     */
    public org.omg.CORBA.Object resolve_str(String sn) throws org.omg.CosNaming.NamingContextPackage.NotFound, org.omg.CosNaming.NamingContextPackage.CannotProceed, org.omg.CosNaming.NamingContextPackage.InvalidName {
        org.omg.CORBA.Object theObject = null;
        // Name valid?
        if ((sn == null) || (sn.length() == 0)) {
            throw new InvalidName();
        }
        NamingContextDataStore impl = (NamingContextDataStore) this;
        org.omg.CosNaming.NameComponent[] theNameComponents = insImpl.convertToNameComponent(sn);

        if ((theNameComponents == null) || (theNameComponents.length == 0)) {
            throw new InvalidName();
        }
        theObject = resolve(theNameComponents);
        return theObject;
    }

    transient protected ORB orb;

    public static String nameToString(NameComponent[] name) {
        StringBuffer s = new StringBuffer("{");
        if (name != null || name.length > 0) {
            for (int i = 0; i < name.length; i++) {
                if (i > 0)
                    s.append(",");
                s.append("[").append(name[i].id).append(",").append(name[i].kind).append("]");
            }
        }
        s.append("}");
        return s.toString();
    }

    // Debugging aids.
    public static final boolean debug = false;

    private static void dprint(String msg) {
        NamingUtils.dprint("NamingContextImpl(" + Thread.currentThread().getName() + " at " + System.currentTimeMillis() + " ems): " + msg);
    }
}
